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2021 GT

Speed Series Pro

A 20″ aluminum frame bmx bike with promax hydraulic disc brakes.
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Manufacturer Price

$900
FrameAluminum
SuspensionRigid
ForkSteel
Wheels20″ Aluminum
DrivetrainSingle-speed
BrakesPromax Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

16 mph

Speed Series Pro

Highest gear

(descending)

Geometry
Specs
Build
Frame

GT Speed Series MK7 Elite Race Design, 6061-T6 AL, Alloy Formed and Butted Speed Metal Tubes, AL CNC/Forged Quick Change Disc Dropout SyStem, BB86, Taper 1-1/8" to 1-1/2" Integrated H/T

BB StandardBB86/BB92, Press Fit

Fork

GT BMX Pro Race, 100% Cr-Mo 1 1/8" Steerer, Tapered Legs, 3/8" Dropouts

Bottom Bracket

Sealed BB86

Headset

1-1/8"-1.5" Taper Integrated Design, 45X45 Degree Sealed Bearings

Stem

Promax Impact Top Load, 53mm

Handlebar

GT Speed Cr-Mo 8.375"H x 29"W, 8° Sweep, 4° Up, Taper Cross Bar

Saddle

BOX Echelon

Seatpost

Integrated

TypeRigid

Pedals

GT Low Profile FS Platform Design

Grips

GT Statement Double Lock-on Grips

Groupset
Crank

GT Forged Alloy 2pc. 175mm Arms, 24mm Hollow/ Cr-Mo Spindle, 44T AL CNC Chain Ring, Alloy Chain Ring Bolts

Cassette

16T Cog

Chain

KMC Z1 Narrow, 3/32"

Brakes

Promax Hydro Disc Rear, 140mm Rotor (Rear Only), Front: Promax Hydro Disc Rear, 140mm Rotor (Rear Only), Rear: Promax Hydro Disc Rear, 140mm Rotor (Rear Only)

TypePromax Hydraulic Disc

Brake Levers

Alloy, 2 Finger

Wheels
Rims

Alloy Double Wall, 36h

Spokes

Stainless Steel, 14g

Front Hub

GT Speed Series, Alloy CNC Body, Sealed Bearings, 28h, 3/8" Female Allen Bolts

Rear Hub

GT Speed Series Disc Cassette, Alloy CNC body, 4 Sealed Bearings, 6 Pawl 72point Alloy Shimano Cassette, 36h, 3/8" Female Allen Bolts w/ Alloy Washers

Tires

Kenda Kompact Pro Race 20 x 1.75"

Rider Notes
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First added March 24

Last updated September 16

Not listed for 986 days